High-stability noise reduction type pneumatic jumbolter

Abstract

The utility model relates to a high-stability noise reduction type pneumatic jumbolter which comprises a machine body, a pneumatic motor, a silencer and an air leg, the upper end of the machine body is fixedly connected with the bottom of the pneumatic motor, the lower end of the machine body is fixedly connected with the air leg, and the silencer is arranged on the pneumatic motor; the air leg comprises an outer cylinder, a first-stage cylinder, a second-stage cylinder and a third-stage cylinder which are sequentially arranged in a sleeving mode from outside to inside, a cylinder inner wear-resisting layer is arranged on the inner surface of the outer cylinder, a first-stage outer wear-resisting layer is arranged on the outer surface of the first-stage cylinder, a first-stage inner wear-resisting layer is arranged on the inner surface of the first-stage cylinder, a second-stage outer wear-resisting layer is arranged on the outer surface of the second-stage cylinder, and a third-stage inner wear-resisting layer is arranged on the outer surface of the third-stage a second-stage inner wear-resistant layer is arranged on the inner surface of the third-stage barrel, and a third-stage outer wear-resistant layer is arranged on the outer surface of the third According to the air leg structure, the brittleness of the air leg is reduced, the stability of the air leg structure is improved, the anchor rod drill body can work more stably, and meanwhile the silencing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of anchor drilling equipment, in particular to a high-stability, silencer-type pneumatic anchor drilling rig. Background Art

[0002] Pneumatic anchor drilling rig is a kind of anchor support equipment for coal mine roadways. It is generally used to improve support effect, reduce cost, reduce labor intensity and improve roadway section utilization rate. It is widely applicable to roadways with rock hardness ≤f8, and is particularly suitable for anchor cable and anchor bolt support operations in coal roadways. It can drill roof anchor cable holes, roof anchor bolt holes, and can push and stir resin drug roll anchor cables and anchor bolts. Pneumatic anchor drilling rig has the advantages of small size, large torque and simple operation. Therefore, the application prospect of pneumatic anchor drilling rig is very broad.

[0003] Due to the low wind pressure, the existing pneumatic anchor drilling rigs are not suitable for using steel propulsion mechanisms. The air leg cylinder and body components are made of fiberglass and engineering plastics respectively. Although fiberglass has high strength and rigidity, it is brittle and is prone to breakage or cracking when subjected to external forces such as impact or bending, causing the anchor to break and even damage the drilling rig. In addition, during actual on-site operation, the high-pressure gas after work at the air outlet of the pneumatic anchor drilling rig is discharged at a very high speed, forming a suction effect on the surrounding air and rapidly mixing and expanding with the air, forming a strong radiant working noise, which on the one hand increases the fatigue of the operator and on the other hand causes physical harm to underground coal mine workers. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a high-stability, silent pneumatic anchor drill.

[0005] The purpose of this utility model is achieved in this way:

[0006] A highly stable, silent pneumatic anchor drill comprises a body, an air motor, a muffler, and an air leg. The upper end of the body is fixedly connected to the bottom of the air motor, and the lower end of the body is fixedly connected to the air leg. The air motor is provided with a muffler. The side of the body is hinged to a control arm.

[0007] The gas leg includes an outer cylinder, a first-level cylinder, a second-level cylinder and a third-level cylinder which are sequentially sleeved from the outside to the inside. The inner surface of the outer cylinder is provided with a cylinder inner wear-resistant layer. The outer surface of the first-level cylinder is provided with a first-level outer wear-resistant layer, and its inner surface is provided with a first-level inner wear-resistant layer. The outer surface of the second-level cylinder is provided with a second-level outer wear-resistant layer, and its inner surface is provided with a second-level inner wear-resistant layer. The outer surface of the third-level cylinder is provided with a third-level outer wear-resistant layer.

[0008] A matching top sleeve is provided inside the top end of the outer cylinder, a first retaining ring is provided above the top surface of the first-level cylinder, a sealing ring is provided on the upper part of the first-level cylinder, and a first-level dustproof ring is provided for sealing connection between the bottom end of the first-level cylinder and the bottom end of the outer cylinder; a second retaining ring is provided above the top surface of the second-level cylinder, a sealing ring is provided on the upper part of the second-level cylinder, and a second-level dustproof ring is provided for sealing connection between the bottom end of the second-level cylinder and the bottom end of the first-level cylinder; a sealing ring is provided on the upper part of the tertiary cylinder, and a tertiary dustproof ring is provided for sealing connection between the bottom end of the tertiary cylinder and the bottom end of the secondary cylinder.

[0009] The bottom surface of the three-stage cylinder is arranged on the base. The center of the base is provided with a top cone hole for arranging the top cone. One end of the base is connected with a handle.

[0010] Furthermore, one side of the control arm is connected to the air intake pipeline, and the other side is connected to the quick water connector through a filter.

[0011] Furthermore, the outer cylinder, the first-stage cylinder, the second-stage cylinder and the third-stage cylinder are all made of carbon fiber and glass fiber composite products.

[0012] Furthermore, the inner wear-resistant layer of the cylinder, the first-level outer wear-resistant layer, the first-level inner wear-resistant layer, the second-level outer wear-resistant layer, the second-level inner wear-resistant layer and the third-level outer wear-resistant layer are all wear-resistant layers synthesized from graphite, ceramic powder and tungsten carbide.

[0013] Furthermore, an O-ring is provided between the top sleeve and the outer cylinder.

[0014] Furthermore, a flange is sleeved on the outside of the outer cylinder.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] The utility model provides a high-stability silent pneumatic anchor drill rig, the air leg is composed of an outer cylinder and a three-stage air cylinder to form a four-section three-telescopic propulsion mechanism, the inner wall of the outer cylinder, the inner and outer walls of the first and second cylinders, and the outer wall of the third cylinder are all provided with a wear-resistant layer synthesized by graphite, ceramic powder, and tungsten carbide, which reduces the brittleness of the air leg, improves the stability of the air leg structure, makes the anchor drill body work more stably, and becomes safer to use in coal mines; on the other hand, a silencer is provided on the pneumatic motor, and the multi-layer graphite wear-resistant layers arranged inside and outside have sound-absorbing properties. The combination of inside and outside improves the silencing effect, greatly reduces the noise emitted by the pneumatic anchor drill rig, and reduces the harm to the workers' bodies. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the present utility model.

[0018] Figure 2It is a cross-sectional schematic diagram of the gas leg of the utility model.

[0019] Figure 3 This is an exploded view of the air leg of the utility model.

[0020] Figure 4 This is a schematic diagram of the telescopic process of the utility model.

[0021] in:

[0022] Airframe 1, pneumatic motor 2, muffler 3, air leg 4, top sleeve 4.1, outer cylinder 4.2, cylinder inner wear-resistant layer 4.21, first-stage cylinder 4.3, first-stage outer wear-resistant layer 4.31, first-stage inner wear-resistant layer 4.32, second-stage cylinder 4.4, second-stage outer wear-resistant layer 4.41, second-stage inner wear-resistant layer 4.42, third-stage cylinder 4.5, third-stage outer wear-resistant layer 4.51, O-ring 4.6, flange 4.7, first-stage dust seal 4.8, first retaining ring 4.9, first-stage Y-ring 4.10, second-stage dust seal 4.11, second retaining ring 4.12, second-stage Y-ring 4.13, third-stage dust seal 4.14, third-stage Y-ring 4.15, top cone 4.16, handle 4.17, air inlet pipe 5, filter 6, quick water connector 7, control arm 8 DETAILED DESCRIPTION

[0023] To better understand the technical solution of the present invention, the following detailed description is provided with reference to the relevant illustrations. It should be understood that the following specific embodiments are not intended to limit the specific implementation of the technical solution of the present invention; they are merely examples of possible implementations of the technical solution of the present invention. It should be noted that the description herein of the positional relationships of the various components, such as component A being located above component B, is based on the relative positions of the components in the illustrations and is not intended to limit the actual positional relationships of the components. Example 1

[0024] See also Figure 1-Figure 4 , Figure 1 A schematic diagram of the structure of a high-stability, silent-type pneumatic anchor drill is drawn. As shown in the figure, the high-stability, silent-type pneumatic anchor drill of the present invention comprises a body 1, an air motor 2, a muffler 3, and an air leg 4. The upper end of the body 1 is fixedly connected to the bottom of the air motor 2, and the lower end of the body 1 is fixedly connected to the air leg 4. The air motor 2 is provided with a muffler 3, and the muffler 3 is provided with a retaining ring on the outside, which is fixed to the body 1 via a connecting piece.

[0025] The side of the body 1 is hinged to the operating arm 8 , one side of the operating arm 8 is connected to the air intake pipe 5 , and the other side is connected to the quick water connector 7 through the filter 6 .

[0026] The gas leg 4 includes an outer cylinder 4.2, a first-level cylinder 4.3, a second-level cylinder 4.4 and a third-level cylinder 4.5, which are sequentially sleeved from the outside to the inside. The inner surface of the outer cylinder 4.2 is provided with an inner cylinder wear-resistant layer 4.21. The outer surface of the first-level cylinder 4.3 is provided with a first-level outer wear-resistant layer 4.31, and its inner surface is provided with a first-level inner wear-resistant layer 4.32. The outer surface of the second-level cylinder 4.4 is provided with a second-level outer wear-resistant layer 4.41, and its inner surface is provided with a second-level inner wear-resistant layer 4.42. The outer surface of the third-level cylinder 4.5 is provided with a third-level outer wear-resistant layer 4.51.

[0027] The outer cylinder 4.2, the first-level cylinder 4.3, the second-level cylinder 4.4 and the third-level cylinder 4.5 are all made of carbon fiber and glass fiber composite products, and the cylinder inner wear-resistant layer 4.21, the first-level outer wear-resistant layer 4.31, the first-level inner wear-resistant layer 4.32, the second-level outer wear-resistant layer 4.41, the second-level inner wear-resistant layer 4.42 and the third-level outer wear-resistant layer 4.51 are all wear-resistant layers synthesized from graphite, ceramic powder and tungsten carbide.

[0028] A matching top sleeve 4.1 is provided inside the top of the outer cylinder 4.2, and an O-ring 4.6 is provided between the top sleeve 4.1 and the outer cylinder 4.2 to seal the end face of the outer cylinder 4.2; a flange 4.7 is provided on the outside of the outer cylinder 4.2, and the flange 4.7 is provided on the upper part of the outer cylinder 4.2;

[0029] A first retaining ring 4.9 is provided above the top surface of the first-stage cylinder 4.3, a first-stage Y-ring 4.10 is sleeved on the upper part of the first-stage cylinder 4.3, and a first-stage dust ring 4.8 is provided between the bottom end of the first-stage cylinder 4.3 and the bottom end of the outer cylinder 4.2 for sealing connection;

[0030] A second retaining ring 4.12 is provided above the top surface of the secondary cylinder 4.4, a secondary Y-shaped ring 4.13 is sleeved on the upper part of the secondary cylinder 4.4, and a secondary dust ring 4.11 is provided between the bottom end of the secondary cylinder 4.4 and the bottom end of the primary cylinder 4.3 for sealing connection;

[0031] A third-stage Y-ring 4.15 is sleeved on the upper portion of the third-stage cylinder 4.5, and a third-stage dustproof ring 4.14 is provided between the bottom end of the third-stage cylinder 4.5 and the bottom end of the second-stage cylinder 4.4 for sealing connection.

[0032] The bottom surface of the three-stage cylinder 4.5 is arranged on a base. The center of the base is provided with a top cone hole for setting the top cone 4.16. One end of the base is connected to a handle 4.17.

[0033] Working principle:

[0034] This embodiment features a highly stable, silent, pneumatic anchor drill. The air leg comprises an outer cylinder and three-stage cylinders, forming a four-section, three-telescopic propulsion mechanism. This mechanism is connected to the transmission components via a body assembly. A top cone is mounted at the bottom of the cylinder, which supports the ground during operation. Other components include a dust ring, a sealing ring, a vibration dampener, and a handle for moving the anchor drill. The outer cylinder of the air leg is made of carbon fiber and fiberglass, with an inner wear-resistant layer of graphite, ceramic powder, and tungsten carbide. The inner and outer surfaces of the first and second cylinders are also coated with a wear-resistant layer, and the outer surface of the third cylinder is also coated with a wear-resistant layer.

[0035] Graphite has excellent chemical stability and is often used as a lubricant in the machinery industry, offering wear resistance, lubrication, and corrosion resistance. Ceramic powder increases fiber strength and high-temperature resistance; tungsten carbide coating improves the metal surface's hardness, wear resistance, corrosion resistance, and high-temperature resistance. Compared to other fiberglass products, the improved air leg structure requires higher dimensional accuracy and offers advantages such as low material density, high strength, light weight, corrosion resistance, wear resistance, high-temperature resistance, antistatic properties, and flame retardancy.

[0036] Compressed air passes through a filter, lubricator, and screen before entering the valve block of the manipulator arm. There, it's divided into two paths: one to control motor rotation and the other to control leg elevation. Manually pressing the trigger opens the motor control valve. Compressed air drives the gear motor, which, through a two-stage gear reduction, rotates the main shaft clockwise. Opening the leg control valve rapidly injects compressed air into the upper chamber of the leg, extending the leg. Closing the leg control valve terminates air supply, automatically opening the exhaust valve and rapidly venting air from the upper chamber, allowing the drill rig to lower under its own weight.

[0037] The above are only specific application examples of the present invention and do not constitute any limitation on the scope of protection of the present invention. Any technical solution formed by equivalent transformation or equivalent replacement shall fall within the scope of protection of the present invention.

Claims

1. A high-stability, silent-type pneumatic anchor drill, characterized by: It comprises a body (1), an air motor (2), a silencer (3) and an air leg (4), wherein the upper end of the body (1) is fixedly connected to the bottom of the air motor (2), the lower end of the body (1) is fixedly connected to the air leg (4), and a silencer (3) is provided on the air motor (2); the side of the body (1) is hinged to the operating arm (8); The gas leg (4) comprises an outer cylinder (4.2), a first-level cylinder (4.3), a second-level cylinder (4.4) and a third-level cylinder (4.5) which are sequentially sleeved from the outside to the inside. The inner surface of the outer cylinder (4.2) is provided with a cylinder inner wear-resistant layer (4.21). The outer surface of the first-level cylinder (4.3) is provided with a first-level outer wear-resistant layer (4.31), and its inner surface is provided with a first-level inner wear-resistant layer (4.32). The outer surface of the second-level cylinder (4.4) is provided with a second-level outer wear-resistant layer (4.41), and its inner surface is provided with a second-level inner wear-resistant layer (4.42). The outer surface of the third-level cylinder (4.5) is provided with a third-level outer wear-resistant layer (4.51). A matching top sleeve (4.1) is provided inside the top end of the outer cylinder (4.2); a first retaining ring (4.9) is provided above the top surface of the first-stage cylinder (4.3); a sealing ring is provided on the upper portion of the first-stage cylinder (4.3); a first-stage dustproof ring (4.8) is provided between the bottom end of the first-stage cylinder (4.3) and the bottom end of the outer cylinder (4.2) for sealing connection; a second retaining ring (4.12) is provided above the top surface of the second-stage cylinder (4.4); a sealing ring is provided on the upper portion of the second-stage cylinder (4.4); a second-stage dustproof ring (4.11) is provided between the bottom end of the second-stage cylinder (4.4) and the bottom end of the first-stage cylinder (4.3) for sealing connection; a sealing ring is provided on the upper portion of the third-stage cylinder (4.5); a third-stage dustproof ring (4.14) is provided between the bottom end of the third-stage cylinder (4.5) and the bottom end of the second-stage cylinder (4.4) for sealing connection; The bottom surface of the three-stage cylinder (4.5) is arranged on a base, a top cone hole is provided at the center of the base for arranging a top cone (4.16), and a handle (4.17) is connected to one end of the base.

2. A high-stability, silent-type pneumatic anchor drill according to claim 1, characterized in that: One side of the operating arm (8) is connected to the air intake pipe (5), and the other side is connected to the quick water connector (7) through the filter (6).

3. The high-stability, silent-type pneumatic anchor drill according to claim 1, characterized in that: The outer cylinder (4.2), the first-stage cylinder (4.3), the second-stage cylinder (4.4) and the third-stage cylinder (4.5) are all made of carbon fiber and glass fiber composite products.

4. The high-stability, silent-type pneumatic anchor drill according to claim 1, characterized in that: The inner wear-resistant layer (4.21) of the cylinder, the first-level outer wear-resistant layer (4.31), the first-level inner wear-resistant layer (4.32), the second-level outer wear-resistant layer (4.41), the second-level inner wear-resistant layer (4.42) and the third-level outer wear-resistant layer (4.51) are all wear-resistant layers synthesized from graphite, ceramic powder and tungsten carbide.

5. The high-stability, silent-type pneumatic anchor drill according to claim 1, characterized in that: An O-type sealing ring (4.6) is provided between the top sleeve (4.1) and the outer cylinder (4.2).

6. The high-stability, silent-type pneumatic anchor drill according to claim 1, characterized in that: The outer sleeve of the outer cylinder (4.2) is provided with a flange (4.7).

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